SparkFun Adjustable LiPo Charger _maker Working temperature：-40℃~80℃

Working temperature：-40℃~80℃

so you can modify them to make your own custom watch enclosure

the maximum output power will be 2 x 3 Watts)

making it ideal for designs such as buggies

10x 10K 5% 1/4W Resistor

SparkFun Adjustable LiPo Charger _maker Working temperature：-40℃~80℃The SparkFun Adjustable LiPo Charger is a single cell lithium polymer (LiPo) and lithium ion battery charger. Because its adjustable, this charger will be able to safely charge most of our single cell batteries with ease. With its onboard charge rate selector, you will be able to set the maximum amount of current to charge your battery from 15mA to 500mA. Once the board is configured for the battery, you can connect power from either a micro USB cable